Lawn trimmer attachment for a riding lawn mower



FIG. 1 is a lawn trimmer attachment for a riding lawn mower showing mynew design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof; and,

FIG. 6 is an enlarged top plan view thereof, the bottom being unadorned.

The ornamental design for a lawn trimmer attachment for a riding lawnmower, as shown and described.